It calls blk_queue_make_request(), which sets the identical set of limits.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
        q->queue_flags          = QUEUE_FLAG_DEFAULT;
        q->queue_lock           = lock;
 
-       blk_queue_segment_boundary(q, BLK_SEG_BOUNDARY_MASK);
-
+       /*
+        * This also sets hw/phys segments, boundary and size
+        */
        blk_queue_make_request(q, __make_request);
-       blk_queue_max_segment_size(q, MAX_SEGMENT_SIZE);
-
-       blk_queue_max_hw_segments(q, MAX_HW_SEGMENTS);
-       blk_queue_max_phys_segments(q, MAX_PHYS_SEGMENTS);
 
        q->sg_reserved_size = INT_MAX;